The body being worn

Abstract

To provide a conversion lens mounting structure capable of appropriately securing the holding force of a conversion lens to an apparatus body and making the structure for mounting the conversion lens compact. [Solution] The conversion lens mounting structure comprises a first magnetic body 130 provided in a conversion lens device 100 having a conversion lens 110, and a second magnetic body 34 provided in a device body 10 having a master lens 20. A first surface 130a of the first magnetic body 130 and a second surface 34a of the second magnetic body 34 attract each other, thereby mounting the conversion lens device 100 to the device body 10, and the second magnetic body 34 is arranged so that the normal to the second surface 34a is not parallel to the optical axis of the master lens 20.

Description

[Technical field]

[0001] The present invention relates to Mounted object Regarding. [Background technology]

[0002] Mounted object Can be attached to Wearable body Various mounting structures have been proposed. For example, Patent Document 1 discloses: Wearable body The magnet attached to the mobile phone attracts the metal piece on the surface of the mobile phone. Wearable body The present invention discloses a structure for attaching the above to a mobile phone. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Registered Utility Model No. 3096603 Summary of the Invention [Problem to be solved by the invention]

[0004] In the mobile phone disclosed in Patent Document 1, the metal piece that is attracted to the magnet is provided so as to be perpendicular to the optical axis of the camera. Therefore, an area on the surface of the mobile phone where the metal piece is provided must be secured that is equal in size to the planar dimensions of the metal piece. Wearable body In order to ensure a certain level of magnetic attraction so that the magnet does not come off, the metal piece needs to be of a certain size. Wearable body The part of the mobile phone where it is attached becomes relatively large.

[0005] The present invention has been made to solve the above problems, Mounted object to Wearable body The retention force of the Wearable body The structure for mounting the R The purpose of this document is to: [Means for solving the problem]

[0006] The object to be attached according to the present invention is a lens that surrounds the optical axis of a first lens and is disposed on the opposite side of the first lens from the side on which an object to be observed is disposed. , and on the inner circumference side of the body to be attached When the attachment is attached to the object to be attached, To prevent the mounting body from slipping off the mounting body. The object to be attached comprises a guide section for guiding the movement of the attachment body and a storage section in which a light source for irradiating light onto the object to be observed is stored, and the first lens is positioned relative to the object to be attached by directly clamping the peripheral portion of the first lens between the end of the guide section on the first lens side and the storage section. Effect of the Invention

[0007] According to the present invention, Mounted object to Wearable body The retention force of the Wearable body The structure for mounting the R . [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing an inspection apparatus according to an embodiment of the present invention, with a conversion lens device removed. [Diagram 2] FIG. 1 is a perspective view showing an inspection apparatus according to an embodiment of the present invention, with a conversion lens device attached; [Diagram 3] FIG. 2 is a front view of the device body as seen from the arrow III in FIG. [Figure 4] FIG. 4 is a rear view of the device body as seen from the arrow IV in FIG. [Diagram 5] 4 is a cross-sectional view of the device body taken along line VV in FIG. 3. [Figure 6] An enlarged view of part “VI” in Figure 5. [Figure 7] FIG. 7 is a front view of the conversion lens device as seen from the direction of arrow VII in FIG. [Figure 8]8 is a cross-sectional view of the conversion lens device taken along line VIII-VIII in FIG. 7. [Figure 9] An enlarged view of part “IX” in FIG. [Figure 10] FIG. 1 is a cross-sectional view showing an inspection apparatus according to an embodiment of the present invention, with a conversion lens device attached; [Figure 11] An enlarged view of part “XI” in FIG. [Figure 12] 1A and 1B are diagrams showing the state in which an inspection device according to an embodiment of the present invention is used with the conversion lens device removed, where (a) is a schematic diagram showing the state in which visible light is emitted, and (b) is a schematic diagram showing the state in which polarized visible light is emitted. [Figure 13] 1A and 1B are diagrams showing the state in which an inspection device according to an embodiment of the present invention is used with a conversion lens device attached, where (a) is a schematic diagram showing the state in which visible light is emitted, and (b) is a schematic diagram showing the state in which polarized visible light is emitted. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In order to facilitate understanding of the embodiment, the description will be made with reference to the Cartesian coordinate system shown in FIG. 1 as appropriate. The X-axis direction and the Y-axis direction in this Cartesian coordinate system are perpendicular to the optical axis OA1 (FIG. 5) of the master lens 20 and the optical axis OA2 (FIG. 8) of the conversion lens 110, which will be described later. Meanwhile, the Z-axis direction in the Cartesian coordinate system is parallel to the optical axis OA1 of the master lens 20 and the optical axis OA2 of the conversion lens 110.

[0010] In this specification, in accordance with the distinction between "Microscope" (microscope) and "Microscopy" (examination using a microscope or the method of using a microscope), the terms "Dermoscope" and "Dermoscopy" are used to mean a magnifying glass (device) for skin examination and a skin examination using such a magnifying glass or the act of using such a magnifying glass.

[0011] (Overview of Inspection Device 1) The inspection device 1 is a dermoscope for inspecting skin. As shown in FIG. 1 and FIG. 2, the inspection device 1 includes a device body 10 and a conversion lens device 100 that can be attached to and detached from the surface of the device body 10 in the -Z axis direction. As shown in FIG. 1, in a state (first state) in which the conversion lens device 100 is removed, a user can perform a dermoscopy examination on the skin arranged on the +Z axis direction side through a circular master lens 20 provided on the device body 10. On the other hand, as shown in FIG. 2, in a state (second state) in which the conversion lens device 100 is attached to the device body 10, a user can perform a dermoscopy examination on the skin arranged on the +Z axis direction side through the master lens 20 and a circular conversion lens 110 provided on the conversion lens device 100. The master lens 20 and the conversion lens 110 are magnifying lenses. A user can observe the skin enlarged to a desired size by appropriately changing the state of the inspection device 1 between the first state and the second state.

[0012] (Configuration of device main body 10) As shown in Figs. 1 and 2, the device main body 10 has a case body 30 formed by combining a first case 31 provided on the -Z axis side and a second case 32 provided on the +Z side. The first case 31 and the second case 32 are made of, for example, white synthetic resin. As shown in Fig. 3, the first case 31 has a planar shape in which a widening portion 35a whose width increases toward the +Y axis direction and a semicircular portion 35b whose width is semicircular are combined. In the first case 31, a circular opening 30b is formed at the connection between the widening portion 35a and the semicircular portion 35b. As shown in Fig. 4, the second case 32 has a planar shape in which a widening portion 36a whose width increases toward the +Y axis direction and a semicircular portion 36b whose width is semicircular are combined. In the second case 32, a circular opening 32a is formed at the connection between the widening portion 36a and the semicircular portion 36b. The opening 32 a formed in the second case 32 is larger than the opening 30 b formed in the first case 31 .

[0013] Between the first case 31 and the second case 32, an accommodation space (not shown) for accommodating various components is formed. For example, as shown in Fig. 3, a rechargeable battery 40 and a circuit board 41 electrically connected to various electronic components are accommodated in the accommodation space of the case body 30. The battery 40 supplies electricity to the various electronic components of the inspection device 1.

[0014] 1, the case body 30 is provided with a master lens 20 that covers the opening 30b. Also, the case body 30 is provided with a cover plate 21 that covers the opening 32a, as shown in FIG.

[0015] 1 and 2, a charging terminal 42 used when charging the battery 40 and a strap attachment part 43 having a hole for passing a strap (not shown) are provided on the end face on the -Y axis direction side of the case body 30. In addition, as shown in Figures 3 and 4, a power button 44 is provided on the side face on the +X axis direction side of the case body 30, and a switching button 45 that is pressed when switching the light source to be emitted is provided on the side face on the -X axis direction side.

[0016] As shown in FIG. 6, the contact surface 31a, the inclined surface 31b, and the inclined wall 31c are formed in this order from the outside around the opening 30b of the first case 31. The contact surface 31a is an area that comes into contact with the conversion lens device 100 shown in FIG. 1. The contact surface 31a is textured, and a fine pattern formed on the surface of the mold during molding is transferred to it. The inclined surface 31b is a step-down portion from the contact surface 31a. The inclined surface 31b is a surface that is gradually formed in the +Z direction from the contact surface 31a toward the inclined wall 31c, and is a surface that is inclined with respect to the XY plane. The inclined wall 31c is inclined by an angle θ with respect to the Z-axis direction. The inclined wall 31c is formed in a cylindrical shape that penetrates in the Z-axis direction, and is formed so that its diameter becomes larger in the -Z-axis direction. The opening 30b of the first case 31 is formed at the end of the inclined wall 31c on the +Z axis side. The inclination of the inclined wall 31c with respect to the XY plane is greater than the inclination of the inclined surface 31b with respect to the XY plane. The inclined wall 31c defines a part of the inserted portion 30a into which the cylindrical protrusion 122c provided on the conversion lens device 100 shown in Fig. 8 is inserted. A metal piece 34 serving as a second magnetic body is attached to the inclined surface 31b with double-sided tape 33.

[0017] The metal piece 34 is made of a magnetic material, such as stainless steel, that is attracted to a permanent magnet. As shown in FIG. 6, the metal piece 34 has a shape corresponding to the shape of the inclined surface 31b. That is, as shown in FIG. 1 and FIG. 5, the metal piece 34 is formed in a cylindrical shape penetrating in the Z-axis direction, and is formed so that its diameter increases in the -Z-axis direction. Therefore, as shown in FIG. 5, the main surface 34a of the metal piece 34 is inclined. The normal N1 of the main surface 34a is not parallel to the optical axis OA1 of the master lens 20 extending in the Z-axis direction, but is oriented in a direction approaching the optical axis OA1. Note that the inclination angle of the main surface 34a differs depending on the surface position, but the direction in which the normal extends is not parallel to the optical axis OA1 of the master lens 20 at any surface position. In addition, a step H is formed at a location where the contacted surface 31a of the case body 30 and the main surface 34a of the metal piece 34 are adjacent to each other, and the main surface 34a of the metal piece 34 is in a position recessed toward the +Z axis side from the contacted surface 31a.

[0018] The master lens 20 is a magnifying lens with a magnification of approximately 6 times. As shown in FIG. 5, the master lens 20 has its outer periphery 20a sandwiched between the first case 31 and a storage section 53 described later. The cover plate 21 is made of, for example, a transparent synthetic resin and is formed in a disk shape. The cover plate 21 has its outer periphery 21a sandwiched between the second case 32 and a storage section 53 described later, and covers the master lens 20 from the +Z axis side. When performing a dermoscopy examination, the skin on the +Z axis direction side of the device body 10 is magnified by the master lens 20 and observed by the user through the master lens 20 and the cover plate 21.

[0019] In addition, around the master lens 20 of the case body 30, there are provided an LED substrate 51 equipped with an LED (Light Emitting Diode) 50 for irradiating light onto the skin, a light guiding section 52 for guiding the light emitted from the LED 50 in a direction approaching the optical axis OA1, a storage section 53 for accommodating the LED 50 and the light guiding section 52 therein, and a polarizing plate 54 for polarizing the light from the LED 50.

[0020] The LED substrate 51 is a substrate formed in an annular shape so as to surround the master lens 20. As shown in FIG. 4, nine LEDs 50 are arranged on the LED substrate 51 at equal intervals along the circumferential direction. The nine LEDs 50 are arranged around the master lens 20 and act as a ring flash that emits light from the outer periphery. The nine LEDs 50 emit visible light in the +Z axis direction. The emitted light enters the light guide 52 and is emitted with its traveling direction directed toward the optical axis OA1 of the master lens 20. This allows light to be irradiated onto the area of ​​the skin observed at the center of the master lens 20, and light can be evenly irradiated onto the skin to be inspected.

[0021] As shown in Fig. 4, the housing portion 53 has openings 53a penetrating in the Z-axis direction at positions corresponding to the nine LEDs 50. Light from the LEDs 50 is emitted through the openings 53a. In Fig. 4, in order to ensure ease of viewing the drawing, only one opening 53a is indicated by a reference numeral, and the reference numerals of the other openings 53a are omitted.

[0022] As shown in FIG. 5, the polarizing plate 54 is interposed between the cover plate 21 and the storage section 53. In FIG. 4, the polarizing plate 54 is illustrated with a broken line and the area of ​​the polarizing plate 54 is hatched so that the details of the polarizing plate 54 can be understood. Therefore, the hatching on the polarizing plate 54 in FIG. 4 does not represent a cross section. The polarizing plate 54 is formed in an annular shape corresponding to the LED substrate 51, and has three notches 54a formed from the inner edge 54b. The three notches 54a are arranged at equal intervals along the circumferential direction of the polarizing plate 54, and are formed so as to open the +Z axis direction side of the corresponding LED 50. That is, three of the nine LEDs 50 are not covered by the polarizing plate 54 and are used as LEDs 50a for emitting visible light, and the remaining six are covered by the polarizing plate 54 and are used as LEDs 50b for emitting polarized light. The light from the LEDs 50b covered by the polarizing plate 54 is reduced in light amount by passing through the polarizing plate 54. Therefore, the number of LEDs 50b for emitting polarized light is greater than the number of LEDs 50a for emitting visible light.

[0023] In addition, during dermoscopy examination, whether to irradiate the skin with visible light or polarized light can be selected by pressing the switch button 45 shown in FIG. 3 and the like. For example, when the power button 44 is pressed to turn on the power of the examination device 1, the LED 50a emits visible light, while the LED 50b does not emit polarized light, resulting in a first light emission state. When the switch button 45 is pressed once from the first light emission state, the LED 50a is turned off and does not emit visible light, while the LED 50b is turned on and emits polarized light, resulting in a second light emission state. In this way, each time the switch button 45 is pressed, the light emission state is switched between the first light emission state and the second light emission state.

[0024] (Configuration of the conversion lens device 100) Next, a description will be given of the configuration of the conversion lens device 100 that is detachably attached to the device body 10. As shown in Figures 1 and 2, the conversion lens device 100 has a conversion lens 110 and a lens frame 120 that holds the outer edge of the conversion lens 110 and has a permanent magnet 130 (Figure 8) provided therein as a first magnetic body.

[0025] The conversion lens 110 is a magnifying lens that can achieve a magnification of approximately 9 times when combined with the master lens 20 shown in FIG.

[0026] As shown in FIG. 8, the lens frame 120 has a first case 121 provided on the -Z axis side and a second case 122 provided on the +Z side to be combined with the first case 121. The lens frame 120 is made of, for example, a white synthetic resin. A circular opening 121a is formed in the center of the first case 121, penetrating in the Z axis direction. A circular opening 124 is formed in the center of the second case 122, penetrating in the Z axis direction. The first case 121 and the second case 122 are combined with each other so that the center of the circular opening 121a and the center of the circular opening 124 are aligned with each other. When combined in this manner, the first case 121 and the second case 122 sandwich the outer edge 110a of the conversion lens 110 provided to close the opening 121a and the opening 124. As a result, the conversion lens 110 is held by the lens frame 120. 1 and 2, a strap attachment portion 126 having a hole for passing a strap (not shown) is provided on the side surface of the lens frame 120 (a surface on the XZ plane). Also, a recessed portion 125 with a recessed center is provided on the side surface of the lens frame 120 extending in the circumferential direction. The recessed portion 125 can easily be caught by the user's fingers, which makes it easy to handle the conversion lens device 100.

[0027] 7 and 8, the permanent magnets 130 are formed in a cylindrical shape, and six permanent magnets 130 are arranged at equal intervals in the circumferential direction of the conversion lens 110. As shown in FIG. 8, the permanent magnets 130 are attached to an inclined surface 123 of the second case 122 inclined with respect to the XY plane. The permanent magnets 130 attached to the inclined surface 123 in this manner are arranged such that their main surface 130a is approximately parallel to at least a part of the main surface 34a of the metal piece 34 shown in FIG. 5 when the conversion lens device 100 is attached to the device body 10. Therefore, the permanent magnets 130 are arranged such that the normal N2 of the main surface 130a is not parallel to the optical axis OA2 of the conversion lens 110.

[0028] 9, the second case 122 has, on its +Z axis side, a contact portion 122a that contacts the contacted surface 31a of the first case 31 shown in FIG. 6, a contact avoidance portion 122b that curves inward from the contact portion 122a (toward the optical axis OA2) and toward the +Z axis direction, and a cylindrical protrusion 122c that is inserted into the inserted portion 30a of the case body 30 when the conversion lens device 100 is attached to the device main body 10.

[0029] The contact portion 122a is composed of a plane (a plane extending in the XY direction) perpendicular to the optical axis OA2 of the conversion lens 110 shown in FIG. 8, and is a flat area formed in an annular shape along the outer edge of the second case 122. The protruding portion 122c protrudes from the contact avoidance portion 122b toward the +Z axis direction, and its outer circumferential surface 122d is inclined at an angle θ with respect to the Z axis direction. This angle θ is the same as the angle θ of the inclined wall 31c shown in FIG. 6 with respect to the Z axis direction. That is, the outer circumferential surface 122d of the protruding portion 122c and the inclined wall 31c shown in FIG. 6 are inclined at the same angle in the same direction. The outer diameter of the protruding portion 122c is smaller than the inner diameter of the inserted portion 30a by, for example, 1 mm.

[0030] (Configuration of Inspection Apparatus 1 with Conversion Lens Apparatus 100 Attached) In the case of inspecting the skin magnified at a magnification higher than that of the master lens 20 during a dermoscopy examination, the conversion lens device 100 is attached to the device body 10. At that time, the protruding portion 122c of the conversion lens device 100 is inserted into the inserted portion 30a of the device body 10. Since the outer diameter of the protruding portion 122c and the inner diameter of the inserted portion 30a are approximately the same size, the rattle of the conversion lens device 100 in the XY plane direction is suppressed. At this time, the metal piece 34 provided on the device body 10 and the permanent magnet 130 provided on the conversion lens device 100 are close to each other. As a result, the main surface 130a as the first surface of the permanent magnet 130 and the main surface 34a as the second surface of the metal piece 34 attract each other. As a result, the conversion lens device 100 is attracted to the device body 10 via a magnetic force, and is attached to and held by the device body 10.

[0031] 11, when the metal piece 34 and the permanent magnet 130 attract each other, the device body 10 and the conversion lens device 100 are tightly attached to each other only in a limited area called the contact area 150. As described above, this contact area 150 is an annular area formed so as to surround the periphery of the master lens 20 and the conversion lens 110. This prevents problems such as the conversion lens device 100 becoming detached during inspection.

[0032] 6, a step H is provided between the main surface 34a of the metal piece 34 and the contact surface 31a of the first case 31, and the contact surface 31a is located slightly on the -Z axis direction side of the main surface 34a. Also, as shown in Fig. 11, the contact avoidance portion 122b of the second case 122 is formed in a curved shape so as to avoid contact with the metal piece 34. As a result, a gap is formed between the conversion lens device 100 and the metal piece 34, and contact between the conversion lens device 100 and the metal piece 34 is avoided.

[0033] Moreover, by inserting the protruding portion 122c of the conversion lens apparatus 100 into the inserted portion 30a of the device body 10, the conversion lens apparatus 100 can be correctly attached to the device body 10. That is, the protruding portion 122c and the inserted portion 30a act as a positioning means for the conversion lens apparatus 100. Even if a force acts on the conversion lens apparatus 100 from a direction parallel to the XY plane, the protruding portion 122c abuts against the inserted portion 30a, thereby preventing the conversion lens apparatus 100 from shifting relative to the device body 10 on the XY plane. That is, the protruding portion 122c and the inserted portion 30a also act as a movement limiting means for limiting the movement of the conversion lens apparatus 100 parallel to the XY plane.

[0034] (How to use the inspection device 1) Next, a method of performing a dermoscopy examination using the examination device 1 will be described. When performing a dermoscopy examination by enlarging the skin to be examined by about six times, as shown in Figs. 12(a) and (b), the examination is performed using the examination device 1 from which the conversion lens device 100 has been removed. The user first presses the power button 44 to turn on the power of the examination device 1 and cause the examination device 1 to emit visible light 400. The light sources that emit the visible light 400 among the light sources provided in the examination device 1 are the three LEDs 50a shown in Fig. 4. Then, the user brings the examination device 1 close to the skin 300 and irradiates the skin 300 with the visible light 400. Then, as shown in Fig. 12(a), the user appropriately secures a distance between the skin 300 and the examination device 1 and observes the skin 300 irradiated with the visible light 400. This allows the user to observe the state of the stratum corneum on the surface side of the enlarged skin 300 through the master lens 20.

[0035] When the inspection of the skin 300 using the visible light 400 is completed, the user then presses the switching button 45 shown in FIG. 3 to switch the light source that emits the light. As a result, polarized visible light 500 is emitted from the inspection device 1. The light sources that emit the polarized visible light 500 among the light sources provided in the inspection device 1 are the six LEDs 50b and the polarizing plate 54 shown in FIG. 4. Then, the user brings the inspection device 1 close to the skin 300 and irradiates the skin 300 with the polarized visible light 500. Then, as shown in FIG. 12(b), the user appropriately secures a distance between the skin 300 and the inspection device 1, and observes the skin 300 irradiated with the polarized visible light 500. As a result, the user can observe the state of the epidermis deeper than the stratum corneum on the surface side of the skin 300 and the shallow dermis in a magnified state by passing through the master lens 20.

[0036] When performing a dermoscopy examination with a larger magnification of the skin, the examination device 1 equipped with the conversion lens device 100 is used as shown in Figs. 13(a) and (b). First, if the power of the examination device 1 is not on, the user presses the power button 44 to turn on the power, or if polarized visible light 500 is being emitted, presses the switch button 45 shown in Fig. 3 to emit visible light 400 from the examination device 1. Then, the user brings the examination device 1 close to the skin 300 and irradiates the skin 300 with the visible light 400. Then, as shown in Fig. 13(a), the user ensures an appropriate distance between the skin 300 and the examination device 1 and observes the skin 300 irradiated with the visible light 400. This allows the user to observe the state of the surface stratum corneum of the skin 300 at a larger magnification through the master lens 20 and the conversion lens 110.

[0037] After the inspection of the skin 300 using the visible light 400 is completed, the user then presses the switching button 45 shown in FIG. 3 to switch the light source that emits light. This causes the inspection device 1 to emit polarized visible light 500. The user then brings the inspection device 1 close to the skin 300 and irradiates the skin 300 with the polarized visible light 500. As shown in FIG. 13(b), the user then ensures an appropriate distance between the skin 300 and the inspection device 1 and observes the skin 300 irradiated with the polarized visible light 500. This allows the user to observe the state of the epidermis and the shallow dermis deeper than the surface stratum corneum of the skin 300 in a more magnified state by passing through the master lens 20 and the conversion lens 110.

[0038] (effect) According to the above embodiment, the conversion lens device 100 is attached to the device body 10 by utilizing the attractive force (magnetic force) between the metal piece 34 provided on the device body 10 and the permanent magnet 130 provided on the conversion lens device 100. Therefore, no complicated operations are required when attaching and detaching the conversion lens device 100, and the conversion lens device 100 can be easily attached and detached.

[0039] As shown in FIG. 5, the metal piece 34 is provided on the inclined surface 31b of the device body 10, and is disposed obliquely so that the normal N1 of the main surface 34a approaches (is not parallel to) the optical axis OA1 of the master lens 20. By disposing the metal piece 34 obliquely in this way, it is possible to reduce the outer diameter R1 of the metal piece 34 while maintaining the adhesive force of the permanent magnet 130, compared with a case where a metal piece having the same area is disposed with its main surface perpendicular to the optical axis OA1. This allows the device body 10 to have a smaller planar dimension (here, the dimension in the XY plane), and thus allows the device body 10 to be made smaller. In addition, since the outer diameter R1 of the metal piece 34 can be reduced, the area of ​​the contact surface 31a shown in FIG. 6 formed along the outer periphery of the metal piece 34 can also be reduced. This allows the structure for mounting the conversion lens to be made compact.

[0040] 8, the permanent magnet 130 is disposed at an angle such that the normal N2 of the main surface 130a is spaced apart from (not parallel to) the optical axis OA2 of the conversion lens 110. By disposing the permanent magnet 130 at an angle in this manner, the planar dimensions (here, dimensions within the XY plane) of the conversion lens device 100 can be reduced while maintaining the adhesive force due to the magnetic force, compared to a case in which the permanent magnet 130 is disposed perpendicular to the optical axis OA2 of the conversion lens 110. This allows the structure for attaching the conversion lens to be made compact, and the conversion lens device 100 can be made smaller.

[0041] 10, the metal piece 34 and the permanent magnet 130 are arranged so that the main surface 34a of the metal piece 34 and the main surface 130a of the permanent magnet 130 are at least partially substantially parallel to each other. This allows the main surfaces 34a and 130a to fully exert a mutually attractive force. This makes it possible to prevent the inspection device 1 from becoming large, while ensuring a sufficient holding force when the conversion lens device 100 is attached to the device body 10.

[0042] 1, a stainless steel metal piece 34 is attached around the insertion portion 30a of the synthetic resin case body 30. By constructing the device body 10 from members made of different materials in this way, the design of the device body 10 can be improved.

[0043] As shown in FIG. 6, the main surface 34a of the metal piece 34 is provided at a position (position in the +Z-axis direction) lower than the contacted surface 31a of the first case 31 by a step H. As shown in FIG. 11, the contact avoidance portion 122b of the second case 122 has a shape that avoids contact with the metal piece 34. This allows a gap to be formed between the conversion lens device 100 and the metal piece 34, and makes it possible to avoid contact between the conversion lens device 100 and the metal piece 34. As a result, it is possible to prevent the metal piece 34 provided on the device body 10 from being scratched or soiled, and the aesthetic appearance of the device body 10 can be maintained. In addition, since damage to the metal piece 34 can be suppressed, the attraction force of the permanent magnet 130 can be maintained and the durability of the inspection device 1 can be improved.

[0044] Furthermore, the conversion lens device 100 is formed with a protruding portion 122c that is inserted into the inserted portion 30a when the conversion lens device 100 is attached to the device body 10. As a result, when attaching the conversion lens device 100 to the device body 10, the protruding portion 122c is simply inserted into the inserted portion 30a, and thereafter the conversion lens device 100 is attached to and held in the device body 10 by magnetic force. This allows the attachment work of the conversion lens device 100 to be performed easily, quickly, and reliably.

[0045] Furthermore, since the protruding portion 122c is configured to be inserted into the inserted portion 30a of the device body 10, even if a force acts to shift the conversion lens device 100 on the XY plane (on a plane perpendicular to the optical axis OA2) relative to the device body 10, the protruding portion 122c abuts against the inserted portion 30a, thereby preventing the conversion lens device 100 from shifting further relative to the device body 10. In other words, the protruding portion 122c and the inserted portion 30a act as a movement limiting means for limiting movement of the conversion lens device 100 parallel to the XY plane.

[0046] Furthermore, in the device body 10, light is emitted from the surface on the +Z axis direction side where the skin to be examined is placed, and the conversion lens device 100 is attached and detached to the opposite surface, the -Z axis direction side. This prevents the conversion lens device 100 attached to the device body 10 from coming off and falling, even if the examiner takes an examination posture in which the skin is placed down and peered at from above. Furthermore, since the conversion lens device 100 can be attached and detached while the skin is being observed by irradiating it with light, a dermoscopy examination involving switching between the first and second states can be smoothly performed.

[0047] 1 and the strap attachment part 43 provided on the device body 10, the conversion lens device 100 and the device body 10 can be always carried together. This allows dermoscopy examination to be performed smoothly.

[0048] (Modification) This invention is not limited to the above embodiment, and various modifications and applications are possible. Any type of magnetic material may be attached to the device body 10 and the conversion lens device 100. For example, contrary to the embodiment, a configuration may be adopted in which a metal piece that is attracted to a permanent magnet is provided to the conversion lens device 100, and a permanent magnet is provided to the device body 10. Also, a configuration may be adopted in which permanent magnets are provided to both the device body 10 and the conversion lens device 100, and the permanent magnet of the device body 10 and the permanent magnet of the conversion lens device 100 attract each other. Also, the metal piece 34 is not limited to being made of stainless steel, and may be made of a ferromagnetic material such as cobalt or nickel.

[0049] In addition, the device body 10 has been described as having a light source that emits visible light and a light source that emits polarized visible light, but the type of light source that the device body 10 has is arbitrary. For example, a light source that emits ultraviolet light or a light source that emits near-infrared light may be provided. In addition, the light emitted from the LED is made polarized light by passing it through a polarizing plate, but a configuration in which polarized light is emitted by attaching a polarizing film to the LED may be adopted. In addition, the light source is not limited to an LED, and other light sources such as a halogen lamp, a fluorescent lamp, a mercury lamp, or an electroluminescence lamp may be adopted.

[0050] In addition, in the above embodiment, a case has been described in which one conversion lens device 100 is attached to and detached from the device body 10. However, for example, a plurality of conversion lens devices having conversion lenses with different magnifications may be prepared, and the conversion lens device to be attached may be selected according to the magnification of the skin to be checked.

[0051] In the above embodiment, a dermoscope for inspecting skin has been described as an example of the inspection device 1 to which the present invention is applied, but the present invention can also be applied to other inspection devices. For example, the present invention can be applied to other devices for inspecting the human body, such as the ears, nostrils, inside the mouth, and the cervix. Furthermore, the present invention can also be applied to magnifying glasses for inspecting industrial products and magnifying glasses for inspecting structures.

[0052] The present invention allows various embodiments and modifications without departing from the broad spirit and scope of the present invention. The above-described embodiments are for the purpose of explaining the present invention and do not limit the scope of the present invention. That is, the scope of the present invention is indicated by the claims, not the embodiments. Various modifications made within the scope of the claims and the scope of the invention equivalent thereto are considered to be within the scope of the present invention. The inventions described in the original claims of this application are appended below.

[0053] (Additional Note) (Appendix 1) a first magnetic body provided in a conversion lens device having a conversion lens; a second magnetic body provided in a device body having a master lens; the conversion lens device is held in a state attached to the device body by an adhesive action between the first surface of the first magnetic body and the second surface of the second magnetic body, the second magnetic body is provided such that a normal to the second surface is not parallel to the optical axis of the master lens. Conversion lens mounting structure.

[0054] (Appendix 2) The first magnetic body is disposed such that at least a portion of the first surface is substantially parallel to the second surface of the second magnetic body. A mounting structure for the conversion lens described in Appendix 1.

[0055] (Appendix 3) the device body is formed with a contact surface that comes into close contact with the conversion lens device by the suction action, and an insertion portion into which the conversion lens device is inserted; The second magnetic body is provided between the contact surface of the device body and the inserted portion. 3. A mounting structure for a conversion lens according to claim 1 or 2.

[0056] (Appendix 4) the conversion lens device has a lens frame that holds the conversion lens, A plurality of the first magnetic bodies are arranged in the lens frame so as to correspond to the second magnetic bodies. 4. A mounting structure for a conversion lens according to any one of appendixes 1 to 3.

[0057] (Appendix 5) The lens frame includes: a contact portion that is disposed on an outer periphery of the device body outside the second magnetic body and that comes into contact with the contacted surface; a contact avoidance portion provided closer to the optical axis of the conversion lens than the contact portion and formed to avoid contact with the second magnetic body, A mounting structure for a conversion lens according to appendix 4 which is dependent on appendix 3.

[0058] (Appendix 6) The region of the contacted surface that comes into contact with the contact portion is textured. A mounting structure for the conversion lens described in Appendix 5.

[0059] (Appendix 7) a cylindrical protrusion portion is formed on the lens frame, the cylindrical protrusion portion being inserted into the circular insertion portion when the conversion lens device is attached to the device body; A mounting structure for a conversion lens according to any one of Appendix 4, Appendix 5, and Appendix 6 dependent on Appendix 3.

[0060] (Appendix 8) The first magnetic body includes a permanent magnet. 8. A mounting structure for a conversion lens according to any one of appendixes 1 to 7.

[0061] (Appendix 9) The second magnetic body includes a metal piece made of stainless steel. 9. A mounting structure for a conversion lens according to any one of appendixes 1 to 8.

[0062] (Appendix 10) An inspection apparatus for inspecting an inspection object through at least the master lens, the inspection apparatus comprising the conversion lens device having the mounting structure for a conversion lens according to any one of claims 1 to 9 and the device body, The device body has a first light source that irradiates the inspection object with visible light and a second light source that irradiates the inspection object with polarized visible light. Inspection equipment.

[0063] (Appendix 11) the first light source and the second light source irradiate light from a side of the device body on which an inspection target is located and which is opposite to a side on which the conversion lens device is attached; 11. The inspection apparatus of claim 10.

[0064] (Appendix 12) The first light source and the second light source are disposed around the master lens. 12. The inspection apparatus according to claim 10 or 11. [Explanation of symbols]

[0065] REFERENCE SIGNS LIST 1 inspection device, 10 device body, 20 master lens, 20a outer periphery, 21 cover plate, 21a outer periphery, 30 case body, 30a inserted part, 30b opening, 31 first case, 31a contacted surface, 31b inclined surface, 31c inclined wall, 32 second case, 32a opening, 33 double-sided tape, 34 metal piece, 34a main surface, 35a widening portion, 35b semicircular portion, 36a widening portion, 36b semicircular portion, 40 battery, 41 circuit board, 42 charging terminal, 43 strap attachment portion, 44 power button, 45 switching button, 50 LED, 51 LED substrate, 52... light guide section, 53... housing section, 53a... opening, 54... polarizing plate, 54a... notch, 54b... inner edge, 100... conversion lens device, 110... conversion lens, 110a... outer edge, 120... lens frame, 121... first case, 121a... opening, 122... second case, 1 22a contact portion, 122b contact avoidance portion, 122c protrusion, 122d outer circumferential surface, 123 inclined surface, 124 opening, 125 recess, 126 strap attachment portion, 130 permanent magnet, 130a main surface, 150 contact area, 300 skin, 400 visible light, 500 polarized visible light

Claims

1. a guide section that surrounds the optical axis of the first lens, is disposed on the opposite side of the first lens from the side on which the observation subject is disposed, and is disposed on the inner peripheral side of the main mounting body, and guides the movement of the mounting body so as to prevent the mounting body from shifting relative to the main mounting body when the mounting body is mounted on the main mounting body; A storage unit that stores a light source for irradiating the observation object with light; A mounting body comprising: The first lens is positioned with respect to the object by directly clamping a peripheral portion of the first lens between an end portion of the guide portion on the first lens side and the accommodation portion. The object to be attached.

2. The guide portion is on a first inclined surface that is inclined with respect to the optical axis so as to approach the optical axis as the guide portion approaches a side of the first lens on which an observation target is placed. The object according to claim 1 .

3. the guide portion guides the movement of the mounting body when the mounting body is mounted on the mounting body in at least a partial region on the inner circumferential side of the first inclined surface of the mounting body, and also functions as a member for positioning the first lens inside the mounting body. The object according to claim 2 .

4. The magnetic body for the object to be mounted is disposed on the first inclined surface, The mounting body having the magnetic body for mounting body is configured to be mountable to the mounting body by an attraction between the magnetic body for the mounting body and the magnetic body for the mounting body. The object according to claim 2 .

5. The mounting body is guided by a second inclined surface that is inclined so as to approach the optical axis as it approaches the side of the first lens on which the observation object is placed when the mounting body is mounted on the mounting body, and is configured to be mountable to the mounting body by an attraction between the magnetic body for the mounting body and the magnetic body for the mounting body. The object according to claim 4.

6. A contact surface is formed in at least a part of an outer circumferential side of the first inclined surface, the contact surface being in contact with the contact surface of the attachment body when the attachment body is attached by the suction action. The object according to claim 4.

7. the magnetic body for the object to be attached is disposed at a position closer to a side of the first lens on which an observation object is disposed than the position of the end of the contact surface on the side of the first inclined surface. The object according to claim 6.

8. The first inclined surface is inclined so as to be axially symmetric with respect to the optical axis. The object according to any one of claims 4 to 7.

9. a distance between the optical axis and an end of the upper surface of the magnetic body for the attachment of ... The object according to any one of claims 4 to 8.

10. the housing portion has a recess capable of housing an end portion of the first lens, The first lens is positioned with respect to the object by directly clamping a peripheral portion of the first lens between an end portion of the guide portion on the first lens side and the recessed portion of the accommodation portion. The object according to any one of claims 1 to 9.

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